Process of preparing propylene-thiohydrin or propylene-ethylene-thiohydrin and products obtained thereby



i as

Patented Jan. 19, 1926.

UNITED [STATES 1,570,262 PATENT OFFICE.

ozone immanent, or sntnmenmnmnoonsr-ou-rnnm rum-m conmm, or noonsr-ox-.m-uam. ennmr, assronoas re raaawnaxn Venn.

mnrs'rna Looms a aammro, or HOGEBT-ON-THE-MAIH, onaum, a consonarron or 0 success or Be Drawing.

and MARTIN CORELL, citizens of Germany,-

residing' at Sindlingen near Hoehst-on-the- Main, and Hoohst-on-the-Main', Germany, respectively, have invented certain: new an Improvements in'Processes of Prearing Pr otgylene-Thiohydrin or Propylenethylene- 'ohydrin and Products Obtained Thereby, of which the following is' 11y the p a s ecification. W

e have found that the hitherto unknown propylene-thiohydrin of the constitution w on CHE-C/H-GH:

CIh-CH-G 4 can be very easily preglared by causing pro- 'ch is for instance,

produced by the additionoi hypochlorous acid1 to propylene, to react with alkali sulreaction was not to be foreseensince it is known that the introduction of alkyl glgfil frequently has a. reventing effect on i l w own reactions. or instance, we may 7 mention the strange impediment caused by the presence of alkyl groupsto the preparation of amides etc. from aceto-acetic ester and malonic ester.

Q Besides. by the preserit recess there is ob-f tained, contrary to the] own process 'for the preparation of eth lenethiohydrin not a primary but a secon ary alcohol (viz. the representative of uite a different class of bodies), which is 0 interest as starting material for bodies newly to befprepared.

It is a' surprising fact that the new secondary propylene-thio sesses similarly ya'uable epro rties as its lower homologue: ethylene-thioh drin. It is ve readilysoluble in water an possesses ahig dissolving abili for many organic dyestufls so that it ren ere excellent service in the art of dyestuif-printing. The thiohy- 'drin which is produced from a mixture of ethyleneand propylene-chlorhydrins by treatment with alkali sulphides and which is probably a mixture of ethylenc-thiohyd tion of the tinohydrins such as o' drin thus obtained possurname raorYLnNn-rmomam on raornnnn-mmmmrnromam AND raonuors om'anmn runner.

Application and August 7, 1022. Serial I0. "0,1287.

drin, prop lene-thiohydrin and ethylenepropylene-t 'ohydrin, shows similar properties. This fact is of great technical importance because it renders possible the direct use of olefinic mixtures for the pre areas Blau gas and some of the earth well gfses which are available, with particular advantage. I a v The invention therefore embraws neralparation of thiohydrins of t e general formula .wherein R stands for the propyleneglycol residue and R, stands for the rop'ylene' glycol or ethylenifilycol residue y cause? chlorhydrins of e general formula R 1 and 11,01 wherein R and B. may stand to:- the propylene-residue and B may also stand for the eth. leneglycol residue toreact with alkali 'snlp ides.

Example.

arts 0 a normal solution of sodium sulphi e d which operation the reaction manifests itse f b rise of mm ratnre. The m x ureisj heated or a short time to boiling, evaporated in vacuo, the sodiumchloride 1s separated) by pressure and the crude thiohydrinf distilled in a vac- At 4 mm. pressure the boiling" point of the propylene-thiohydrin is at 120 C. If instead of propylene-chlorhydrin a mix ture of propyleneand eth lene-ohlorhydrin is used, the reaction and her treatment takes place in a quite analogous manner.

Having now described our invention, what we claim is 1. As new products, the thiohydrins' of the general formula V s 11? wherein R- stands for the pronyleneglycolresidue and R for the propy eneglycol-or ethyleneglycol residue, which are readily 189 parts of prop lene-chlorhydrin are .run into 1000' soluble in water and possess a high dissolving ability for man organic dyestufl's.

2. The process 0 reparing thiohydrins of the general formula wherein R stands for the pro yleneglycolresidue and R for the propy eneglycol-or ethyleneglycol residue, which conslsts in causing chlorhydrins of the formula RCl and R C], wherein R and R may stand for the propylene-residue and R may also stand for the ethyleneglyco-l residue, to react with a]- kali sulphides.

' 3. The process of preparing thiohydrins of thegeneral formula wherein R stands for the propyleneglycolresidue and R for the propyleueglycol-or ethylene lycol residue, which consists in causing c orhydrins of the formula RC1 and R Cl, wherein R and R may stand for the propylene-residue and R may also stand for the ethyleneglycol residue, to react with alkali sulphides and in purifyin after separation of the alkali chloride.

4. The process. of preparing propylenethioh drin which conslsts in causing propyleneclil hides,

5. The. process of preparing propylenethioh drin which conslsts in causing propylenec lorhydrin to react with alkali sulphides, and purifying afterseparationof the alkali chlorlde.

6. The process of preparing ethylene-propylenethioh drin which conslsts in causing a mixture 0 ropylenechlorhydrin and ethylene-chlorhy rin to react with alkali sulphides.

7 The process of preparing ethylene-provpylenethiohydrin which consists in causin a mixture of propylenechlorhydrin an ethylenechlorhydrin to react with alkali sulphides,'and urifying after separation of the alkali c oride.

In testimony whereof, we alfix our signatures.

GEORG KRANZLEIN. MARTIN CORELL.

orhydrin to react with alkali sul soluble in water and possess a high dissolving ability for man organic dyestufi's.

2. The process 0 preparing thiohydrins of the general forum a wherein R stands for the pro yleneglycolresidue and R for the proply eneglycol-or ethylene lycol residue, whic consists in causing c lorhydrins of the formula RC1 and R CI, wherein R and R may stand for the propylene-residue and R may also stand for the ethyleneglycol residue, to react with alkali sulphides.

3. The process of preparing thiohydrins of the general formula wherein R stands for the pro yleneglycolresidue, and R for the propy eneglycol-or ethylene 1 col residue, which consists in causing c orhydrins of the formula RC1 and R Cl, wherein R and R may stand for the propylene-residue and R may also stand for the ethyleneglycol residue to react with al- 7 The process of preparing ethylene-propylenethiohydrin which consists in causin a mixture of propylenechlorhydrin and ethylenechlorhydrin to react with alkali sulphides, and 1purifying after separation of the alkali ch oride.

In testimony whereof, we aflix our signatures.

GEORG KRANZLEIN. MARTIN CORELL.

Certificate of qCorreetion. a It is horebycertified that Letters Patent N 1,570,262, granted January 19, 1926,

upgn the application of Georg Kriinzle an in o Sindlingen, near Hochst-on-the-Main, Main,

Martin Corell, of Hochst-on-the- Germany, for an improvement in Processes of Preparin Propylene-Thiohydrin or Propylene-Eth lene-Thiohydn'n and Products Obtain Thereby, were erroneously issued to arbwerke vorm lorhydrin to react with alkali sul- Meister' Lucius & Bruning', of Hochst-on-the-Main, Germany, a Corporation of Germany, whereas said Letters Patent should have been issued to Grqsselh Dyestufi' Corporation, of New York, N. Y, a Oarporqtion of Delawgre,"s a1d cor-pore tion being assi as by mam assignments of'the entire interest in said 1nvent10n, as shown by Hi: records of assignments in this office; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the in the Patent Oflice. ,1 3

Signed and sealed this 20th day of Apl'fl, D. 1926. r

"[llm] a I M. J. MOORE A Acting Commissioner of Patents.

Certificate of ,Correction.

It is hereby certified that Letters Patent No. 1,570,262, granted January 19, 1926, upon the application of Georg Kriinzlein of Sindlingen, near Hochst-on-the-Main, and Martin Corell of Hochst-on-theain, Germany, for an improvement in Processes of Preparing Propylene-Thiohydrin or Propylene-Ethylene-Thiohydrin and Products Obtained Thereby, were erroneously issued to Farbwerke vorm. Meister Lucius & Bruning, of Hochst-on-theMain, Germany, a Corporation of Germany, whereas said Letters Patent should have been issued to Grasselli Dyestu/f Corporation, of New York, N. Y, a Corporation of Delaware, said corporation being assi ee by mesm assigmrw'rwa of the entire interest in said invention, as shown by t e records of assignments in this office; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Oflice.

Signed and sealed this 20th day of April, A D. 1926. l

M. J. MOORE, Acting Commissioner of Patents. 

